Promises still run in the main thread. You could try to use a web worker, but th... | Hacker News

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earthboundkid on Sept 18, 2019 | parent | context | favorite | on: The cost of parsing JSON

Promises still run in the main thread.

You could try to use a web worker, but then you run into the problem that they don't have shared memory, so you need to pass data back some other way.

earthboundkid on Sept 19, 2019 [–]

IndexedDB runs on web workers, so that might be a good way to push the work off the main thread but still share the result.

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